The minion does not dodge the breath (25 Ref save), takes 83-10 fire damage, and disappears.
Fang dodges (33+2 Ref save) and takes 41-30 fire damage. He has 197 hp.
Shimmy:You can breathe again next round.
Fang:You sense Shimmy at 25N65E.
Fang heals to 199 hp and starts round 23.